Q. The motion in which a body moves back and forth about its mean position is known as?

A
Rectilinear Motion
B
Rotatory Motion
C
Oscillatory Motion
D
Periodic Motion
Solution:

Oscillatory motion can be termed as the repeated motion in which an object repeats the same movement over and over. In the absence of friction, the oscillatory motion would continue forever; but in the real world, the system eventually settles into equilibrium.

Ex: The movement of a Swing

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